Crusher



Patented Sept.. 6, 1927.

UNITED STATES i p 1,641,776l PATENT orf-'ICE'.

ARAY C. NEWHOUSE, OF WAUWATOSA., WISCONSIN, ASSIGNOR TO ALLISrCHALMERS MANUFACTURING COMPANY, F MILWAUKEE, WISCONSIN, A CORPORATION OF DELAWARE.

onUsHEn.

Application led January 19, 1925. Serial No. 3,230.

' specifically to improvements in the lconstruc- -tion and operation of crushers for reducing substances such as rock, coal, ore and the like.

An object of the invention is to provlde au improved crusher which issimple in construction and eicient in operation.

Some of the more specific objects of the invent-ion are as follows:

Tt; provide improved driving mechanism for crusherslincluding interconnected gyrating and actuating means for a crushing member located at opposite ends thereof, and means whereby such mechanism may be cifectively protected against damage due t0 entry of grit and dirt. l l

To provide an improved simple, compact and highly efficient gyratory crusher structure wherein a high speed motor may be employed to gyrate the movable crushing member at relatively low speed.

To provide other improvements in crusher construction whereby the cost of construction of such machines is reduced to a'. minimum and the efficiency is increased to a maximum.

Some of the novel features of crusher con-1 struction disclosed but not specically claimed herein form. the subject of the copending application Serial Number 588,401 filed September 15, 1922.

A clear conception of an embodiment of the invention and of the operation of machines constructed in accordance therewith, may be had by referring to the drawing accompanying and forming a part of thls specification in which llke characters designate the same or similar parts in the several views.

Fig. 1 is a central vertical section through an improved motor driven gyratory crusher.

Fig. 2 is a transverse horizontal section through the improved crusher, the sectlon being taken directly above the speed reduction gearing and the view being taken in. a

downward direction.

The improved crusher which has vbeen illustrated as being of the well known gyratory type, comprises in general a stationaryannular crushing member or concave 3 mounted within an upper frame 4, and a relatively gyratable crushing member or head 2 located within and cooperating with the concave 3 to form an annular downward converging crusher chamber 13.v The gyratory head 2- is of frusto-conical shape and is rigidly secured to an .upright hollow suspension-.shaft 5 which is supported by a spherical suspension bearing 18 and a guide bearing 19 formed in a relatively heavy spider 10 which is rigidly attached to the upper frame 4. lThe crushing chamber 13 has an upper inlet 12 accessible through' the spacev between the arms of the spider 10,

and a lower annular outlet 14 communicat ing with the interior of a lower frame 11 upon which the upper frame 4 is mounted. The interior of the lower. frame 11 communicateswith a linal discharge spout 35. The upper and lower frames 4, 11 are mounted upon a suitable foundation 16 and the lowerframe 11 is provided with an integral bearing hub 23 having a renewable bushing 75 or sleeve 22 therein.

The lower extremity of the hollow suspension shaft 5 extends into the bushing 22 and is fitted within a bore of a rotary eccentric. 6 the outer surface of which engages 80 the bore of the bushing 22. The eccentric 6 is loca-ted closely adjacent to the lower end of the crushing head 2 and an upper cap 26 engages the shaft 5 and the bushing 22 in order to prevent dirt from entering .the region of the eccentric 6. The eccentric 6 is mounted upon athrust bearing 21 secured to the lower extremity of the frame 11 and carries three depending stub-shafts 30 upon each of which is mounted a spur gear 29. The spur gears 29 meshwith an internally toothed stationary member 17 which is secured to the frame 11,*and also mesh with a central pinion 28 which is rigidly secured to the slotted lower extremity 20 of the upright drive shaft 7. The lower portion of the drive shaft 7 is supported in a guide bearing 27 formed within the eccentric 6 and the shaft 7 extends upwardly through the hollow suspension shaft 5.

The upper portion of the shaft 7 is supported in a combined thrust and guide bear.- ing 15 located above the suspension bearing 18 of the shaft 5. The upper extremity of the drive shaft 7- is direct connected lto a primemover or electric motor 9 by means of a flexible coupling 8, the motor 9 beingsupported from the spider 10 by virtue of intermediate stationar supportingelement 32,.

suspension bearing 18, and the guide bearing 19 are accessible for lubrication through openings in the supporting element 32. The bearings of the eccentric 6, the bearing 27 and the gearing connecting the shaft 7 with the eccentric 6 may be eectively lubricated by means of oil admitted through an inlet 24 and discharging through an outlet 25. The gearin connecting the shaft 7 and the eccentric 6 1s inclosed by means of a removable lower cap 31 thus making this gearing readily accessible and removable.

During normal operation of the crusher the motor 9 is-operating at relatively high speed and vis transmitting rotary. motion through the coupling 8 and sha-ft 7 to the central pinion 28. The high speed rotary motion of the pinion 28 is transmitted to` the idler pinions 29 which are caused to roll upon the internal teeth of the element 17 and thereby produce relatively slower rotation of the eccentric 6. By providing a proper number of teeth on the pinion 28, gears 29` and the element 17 comprising the planetary gear set, lany desired speed of rotation of the eccentric 6 may be attained. The rotating eccentric 6 produces gyration of the suspension shaft 5 and'of the head 2 about the center of genera-tion on the spherical suspension bearing 18, andl relatively tothe sta-4 tionary concave 3. This relative gyratory motion of the members 2A, 3 produces gradual disintegration or reduction of material admitted to the crushing chamber 13 through the inlet 12, the reduced material being gradually advanced through the chamber 13 and eventually discharged by gravit through the annular outlet 14 and througii the spout 35 associated with the lower frame 11.`

From the foregoing description it will be obvious that a. hi h speed electric motor 9 may readily be utized to effectively o erate or gyrate the crusher head 2 at relatively low speed. The planetary drive connecting the motor' 9 and the operating eccentric 6 is of simple and efficient construction and is'readily accessible for inspection and removalxc The various elements of the'structure may be readil lubricated and may be thoroughly protecte against entry of dirt and grit. By locating the motor 9 above the crusher, this motor is also protected against possible damage.

It should be understood that it is not desired to limit the invention to the exact details of construction and operation herein shown and described, for various modifications within the scope of the claims may occur to persons skilled in the art.

It is claimed and desired to secure by Letters Patent 1. In combination, relatively gyratable crushing members having a concentric end guide bearing, means disposed at one'end of said members remote from said bea-ring for relatively gyrating the same, means disposed at the opposite end of said members for actuating said gyrating means, and speed reducing means disposed at said first mentioned end of said members and connecting said" actuating and said gyrating means.

2. In combination, relatively gyratable crushing members having a concentric upperguide bearing, means located below said members for relatively gyrating the same,- means located above said members for actuating said gyrating means, and speedfreduction gearing loc-ated below said members and connecting said actuating and said gyrating means.

3. In combination` relatively gyratable inner and outer crushing members' having a l' concentric upper guide bearing, means located directly below said members for relatively gyrating the same, means operable at high speed and located above said members for actuating said gyrating means, and speed reduction gearing located'below" said members and connecting said actuating andv said gyrating means.

4. Incombination, relatively gyratable inner and outer crushing members having a concentric upper guide bearing-an eccentric located directly below said members for relatively gyrating the same, a high speed motor located abovesaid members for actuating said eccentric, and planetary gearing located below said members and connecting said motor and said eccentric.

5.In combination, relatively gyratable inner and outer crushing members, a guide bearing for said inner'member ,disposed concentric With and above said outer member, an eccentric located belowfsaid members for gyrating said inner relatively to 4said outer member, a motor located above said-mem--- bers, a shaft associatedwith said' motor and extendingv downwardly through said members, andplanetary gearing connecting said shaft and said eccentric.

6. In combination, relativelyV gyratable.-

inner and outer crushing members, a guide bearing for sald inner member disposed concentrlc w1th and above said outer member,

an eccentric located directly below said memyconcave for gyrating sai head relatively to Lemme said concave, a motor located at the guide bearing end of said head, a shaft assoclated' with said motor and extending longitudi-4 nally of said head, and speed re cing gearing connecting said shaft and said eccentric.

8. In combination, relatively gyratable inner and outer crushing members, a ide bearing for said inner member dispose concentric with and above said outer member, an eccentric located belowsaid members for relatively gyrating the same a motor located above said members and said bearing, a shaft associated with said motor and extending through said membersand planetary gearing connecting said shaft an said eccentric below the latter.

,9. In combination, an annular crushing member, a second crushing member located within said annular member, a guide bearing for said second member disposed coaxiall for said second member disposed co-axia-l with the axis of annularity of said annular member, a rotary element for gyrat-ing said second member relatively to said axis, a motor havinga rotor co-axial with said axis, and spee nectin said rotor an said element.

11. n combination, an annular crushing member, a second crushing member located within said annular member, an eccentric for'positively gye'rating said second member, said eccentric ing located below said second Vmember, a hlgh speed motor located above said second member, and a mechanical connection between said motor and said eccentric, said connection comprising a drivin shaft penetrating said -head and slpeed re ucing gearing associated with said s aft.

12. In combination, relatively ratablc crushing members having adjacent leed and discharge ends, a rotary element for relatively gyrating said members, said element bein located at one of said ends of said mem ers, high speed drivin means located at theother of said ends o ysaid members, and a rota motion transmitting connection between saidv driving means and said element, said connection comprising a drivin shaft penetrating .said members and e reducing gearing associated with said s aft.

In testimony whereof, the signature of the inventor is aixed hereto.

RAY o. NEWHOUSE.

reducing earing drivingly con- 

